Update README.md (#41)

Author: mfvanek

README.md

@@ -37,9 +37,9 @@ For more information please see [PostgreSQL Versioning Policy](https://www.postg
 13. Columns with [json](https://www.postgresql.org/docs/current/datatype-json.html) type ([sql](https://github.com/mfvanek/pg-index-health-sql/blob/master/sql/columns_with_json_type.sql)).
 14. Columns of [serial types](https://www.postgresql.org/docs/current/datatype-numeric.html#DATATYPE-SERIAL) that are not primary keys ([sql](https://github.com/mfvanek/pg-index-health-sql/blob/master/sql/non_primary_key_columns_with_serial_types.sql)).
 15. Functions without [description](https://www.postgresql.org/docs/current/sql-comment.html) ([sql](https://github.com/mfvanek/pg-index-health-sql/blob/master/sql/functions_without_description.sql)).
-16. Indexes [with boolean](https://habr.com/ru/companies/tensor/articles/488104/) ([sql](https://github.com/mfvanek/pg-index-health-sql/blob/master/sql/indexes_with_boolean.sql))
-17. Tables with [not valid constraints](https://habr.com/ru/articles/800121/) ([sql](https://github.com/mfvanek/pg-index-health-sql/blob/master/sql/check_not_valid_constraints.sql))
-18. B-tree indexes [on array columns](https://habr.com/ru/articles/800121/) ([sql](https://github.com/mfvanek/pg-index-health-sql/blob/master/sql/btree_indexes_on_array_columns.sql))
+16. Indexes [with boolean](https://habr.com/ru/companies/tensor/articles/488104/) ([sql](https://github.com/mfvanek/pg-index-health-sql/blob/master/sql/indexes_with_boolean.sql)).
+17. Tables with [not valid constraints](https://habr.com/ru/articles/800121/) ([sql](https://github.com/mfvanek/pg-index-health-sql/blob/master/sql/check_not_valid_constraints.sql)).
+18. B-tree indexes [on array columns](https://habr.com/ru/articles/800121/) ([sql](https://github.com/mfvanek/pg-index-health-sql/blob/master/sql/btree_indexes_on_array_columns.sql)).
 
 ## Local development